Battery charger



FIG. 1 is a perspective front view of a battery charger showing the new design;

FIG. 2 is a top view thereof;

FIG. 3 is a bottom view thereof;

FIG. 4 is a left side view thereof;

FIG. 5 is a right side view thereof;

FIG. 6 is a rear view thereof; and,

FIG. 7 is a front view thereof.

The broken line showing the environmental structure of the battery charger in the figures forms no part of the claimed design. Unshaded regions bounded within the broken lines regions form no part of the claimed design. 

The ornamental design for a battery charger, as shown and described. 